September weather forecast
Eaton, CO

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Weather in September

September, the first month of the autumn in Eaton, is still a warm month, with an average temperature ranging between max 79.3°F (26.3°C) and min 53.2°F (11.8°C).

Temperature

A moderate decline in average high-temperatures is noted in September, moving from a tropical 87.1°F (30.6°C) in August to a moderately hot 79.3°F (26.3°C). During September, Eaton's temperature records a considerable difference from its daily highs to an average low of 53.2°F (11.8°C).

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 44%.

Rainfall

In September, the rain falls for 9.5 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. In Eaton, Colorado, during the entire year, the rain falls for 108.3 days and collects up to 12.32" (313mm) of precipitation.

Snowfall

June through September are months without snowfall in Eaton.

Daylight

The average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:42 pm MDT.

Sunshine

The average sunshine in September is 10.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 4 in September interprets into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

September temperatures vary between a high-temperature of 79.3°F (26.3°C) and a low-temperature of 53.2°F (11.8°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 87.8°F (31°C).

What is the least humid month?

The months with the lowest humidity are August and September, with an average relative humidity of 44%.

What is the average humidity in September?

In September, the average relative humidity in Eaton is 44%.

How many days does it rain in September?

In Eaton, in September, during 9.5 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Eaton, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Eaton have in September?

In Eaton, the average day length in September is 12h and 27min.

What time are sunrise and sunset in September in Eaton?

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm MDT.

How long on average sun shines in September?

The average sunshine duration in September is 10.7h.

What is the UV index intensity in September?

In Eaton, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Eaton, CO

Average temperature in September - Eaton, CO
  • Average high temperature in September: 79.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

Average pressure in September
Eaton, CO

Average pressure in September - Eaton, CO
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Eaton, CO

Average wind speed in September - Eaton, CO
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in September
Eaton, CO

Average humidity in September - Eaton, CO
  • Average humidity in September: 44%

The month with the highest relative humidity is December (64%).
The months with the lowest relative humidity are August and September (44%).

Average rainfall in September
Eaton, CO

Average rainfall in September - Eaton, CO
  • Average rainfall in September: 0.91"

The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and December (0.31").

Average rainfall days in September
Eaton, CO

Average rainfall days in September - Eaton, CO
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (2.9 days).

Average snowfall in September
Eaton, CO

Average snowfall in September - Eaton, CO
  • Average snowfall in September: 0"

The month with the highest snowfall is April (3.23").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Eaton, CO

Average snowfall days in September - Eaton, CO
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in September /
Average sunshine in September
Eaton, CO

Average daylight in September / Average sunshine in September - Eaton, CO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 10h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in September
Eaton, CO

Average sunshine days in September - Eaton, CO
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in September
Eaton, CO

Average UV index in September - Eaton, CO
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Eaton, CO

Average cloud cover in September - Eaton, CO
  • Average cloud cover in September: 18

The months with the most cloud cover are February and April (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 17).

Average visibility in September
Eaton, CO

Average visibility in September - Eaton, CO
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Eaton, Colorado, USA

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